Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'beb9b44070f2f65551cc5cd24a19c09bd247ad0de8310f3a70dc629f6cfc9b11' 
  AND token = 'aFqqGIZKX8jp8HGE71cCYS4jbrUCB7cOI52m4JjsREg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

Explain
id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
1	SIMPLE								Impossible WHERE noticed after reading const tables